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Jupiter 36B Focus ring broken
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PostPosted: Sat Apr 26, 2014 7:33 am    Post subject: Jupiter 36B Focus ring broken Reply with quote
Edited

Last edited by bernhardas on Sat Apr 02, 2016 7:58 pm; edited 1 time in total


PostPosted: Sat Apr 26, 2014 9:36 am    Post subject: Reply with quote
This sounds like the grub screws fixating the focusing grip/ring to the helicoid has come loose. Tightening the screws is usually easily done, once you have access to them. These are the same screws that are purposely loosened to adjust infinity focus (if you look for a description/ how to for your particular lens). The lenses I've fixed this issue with all had their screws accessed from the front, sometimbes directly behind the name ring.


PostPosted: Sun Apr 27, 2014 12:47 pm    Post subject: Reply with quote
edited

Last edited by bernhardas on Wed Apr 06, 2016 6:58 am; edited 1 time in total


PostPosted: Mon Jun 02, 2014 5:04 pm    Post subject: Reply with quote
Hi,

When bought this lens the focus ring was flimsy but working (3cm of play !). The focus ring is attached to an internal helicoid by two small headless screws (near 3.5 and infinity marks). Align the ring and tighten both screws. You may have to repeat this operation to get infinity mark properly aligned (if wasn't at infinity or minimal distance when the focus ring "broke").

Hope it helps.
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